On Tue, Apr 24, 2012 at 01:11:40PM +0800, Daniel J Blueman wrote:
> I was seeing root_list corruption on unmount during fs resize in 3.4-rc4; add
> correct locking to address this.
>
> Signed-off-by: Daniel J Blueman <daniel@xxxxxxxxx>
> ---
> fs/btrfs/relocation.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
> index 017281d..5a105a0 100644
> --- a/fs/btrfs/relocation.c
> +++ b/fs/btrfs/relocation.c
> @@ -1279,7 +1279,9 @@ static int __update_reloc_root(struct btrfs_root *root, int del)
> if (rb_node)
> backref_tree_panic(rb_node, -EEXIST, node->bytenr);
> } else {
> + spin_lock(&root->fs_info->trans_lock);
> list_del_init(&root->root_list);
> + spin_unlock(&root->fs_info->trans_lock);
> kfree(node);
> }
> return 0;
> --
> 1.7.9.5
>
Reviewed-by: Josef Bacik <josef@xxxxxxxxxx>
Thanks,
Josef
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